Title:
METHOD FOR PRODUCING AN ELONGATED (BI, PB)SCCO SUPERCONDUCTOR
Document Type and Number:
WIPO Patent Application WO2003019687
Kind Code:
A3
Abstract:
The invention relates to a method for producing an elongated, preferably strip-type (Bi, Pb)SCCO superconductor, according to which an oxidic precursor powder, which primarily contains a tetragonal BSCCO 2212 phase and a plumbate phase as the doping material, is used. Said precursor powder is introduced into a sleeve consisting of a precious metal alloy, in which between approximately 0.5 and 4 atom % of a base metal is dissolved. The conductor intermediate product, consisting of the precursor powder and sleeve, is annealed in a protective gas atmosphere with a low oxygen content. The phase transition of the tetragonal BSCCO 2212 phase into an orthorhombic, lead-doped (Bi, Pb)SCCO 2212 phase, which occurs during annealing, is accompanied by a release of oxygen, which causes an internal oxidation of the precious metal sleeve. The dispersion-hardened sleeve thus produced exhibits several advantages during subsequent thermomechanical treatment.
Inventors:
SZULCZYK ANDREAS (DE)
FISCHER BERNHARD (DE)
GIERL JUERGEN (DE)
ARNDT THOMAS (DE)
MUNZ MARTIN (DE)
FISCHER BERNHARD (DE)
GIERL JUERGEN (DE)
ARNDT THOMAS (DE)
MUNZ MARTIN (DE)
Application Number:
PCT/EP2002/009299
Publication Date:
January 29, 2004
Filing Date:
August 20, 2002
Export Citation:
Assignee:
VACUUMSCHMELZE GMBH & CO KG (DE)
SZULCZYK ANDREAS (DE)
FISCHER BERNHARD (DE)
GIERL JUERGEN (DE)
ARNDT THOMAS (DE)
MUNZ MARTIN (DE)
SZULCZYK ANDREAS (DE)
FISCHER BERNHARD (DE)
GIERL JUERGEN (DE)
ARNDT THOMAS (DE)
MUNZ MARTIN (DE)
International Classes:
H01L39/24; (IPC1-7): H01L39/24
Foreign References:
EP0837512A1 | 1998-04-22 | |||
US5942466A | 1999-08-24 |
Other References:
DATABASE WPI Section Ch Week 199430, Derwent World Patents Index; Class L03, AN 1994-243601, XP002247053
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